Dynamics of polarization modes in photonic crystals based on arrays of vertical-cavity surface-emitting lasers

Guerrero, Gilles; Boiko, Dmitri L.; Kapon, Eli
May 2004
Applied Physics Letters;5/10/2004, Vol. 84 Issue 19, p3777
Academic Journal
Polarization dynamics in coherent arrays of vertical-cavity surface-emitting lasers are studied experimentally. The two degenerate polarization lasing modes expected in infinitely large arrays are observed at different frequencies in finite-size structures. The frequency splitting increases with decreasing array size and reaches 60 GHz in 2 × 2 arrays. This splitting is attributed to the coupling of the two polarization states through depolarization and scattering effects at the boundary of the array. Small arrays lase in the two-frequency regime, whereas large ones oscillate in the single-frequency domain.


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